package org.mpremote.android.framework.ui.quickaction;

import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import org.mpremote.android.R;

import java.util.ArrayList;

/**
 * Created by IntelliJ IDEA.
 * User: Gilad
 * Date: 07/10/2010
 * Time: 00:17:43
 * <p/>
 * Source code taken from http://www.londatiga.net/it/how-to-create-quickaction-dialog-in-android/
 * Thank you!
 *
 * @author Lorensius. W. L. T
 */
public class QuickAction extends QuickActionPopupWindow {
    private final View root;
    private final ImageView mArrowUp;
    private final ImageView mArrowDown;
    private final Animation mTrackAnim;
    private final LayoutInflater inflater;
    private final Context context;

    public static final int ANIM_GROW_FROM_LEFT = 1;
    public static final int ANIM_GROW_FROM_RIGHT = 2;
    public static final int ANIM_GROW_FROM_CENTER = 3;
    public static final int ANIM_AUTO = 4;

    private int animStyle;
    private boolean animateTrack;
    private ViewGroup mTrack;
    private ArrayList<QuickActionItem> actionList;

    /**
     * Constructor
     *
     * @param anchor {@link View} on where the popup should be displayed
     */
    public QuickAction(View anchor) {
        super(anchor);

        actionList = new ArrayList<QuickActionItem>();
        context = anchor.getContext();
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        root = (ViewGroup) inflater.inflate(R.layout.quickaction, null);

        mArrowDown = (ImageView) root.findViewById(R.id.arrow_down);
        mArrowUp = (ImageView) root.findViewById(R.id.arrow_up);

        setContentView(root);

        mTrackAnim = AnimationUtils.loadAnimation(anchor.getContext(), R.anim.rail);

        mTrackAnim.setInterpolator(new Interpolator() {
            public float getInterpolation(float t) {
                // Pushes past the target area, then snaps back into place.
                // Equation for graphing: 1.2-((x*1.6)-1.1)^2
                final float inner = (t * 1.55f) - 1.1f;

                return 1.2f - inner * inner;
            }
        });

        mTrack = (ViewGroup) root.findViewById(R.id.tracks);
        animStyle = ANIM_AUTO;
        animateTrack = true;
    }

    /**
     * Animate track
     *
     * @param animateTrack flag to animate track
     */
    public void animateTrack(boolean animateTrack) {
        this.animateTrack = animateTrack;
    }

    /**
     * Set animation style
     *
     * @param animStyle animation style, default is set to ANIM_AUTO
     */
    public void setAnimStyle(int animStyle) {
        this.animStyle = animStyle;
    }

    /**
     * Add action item
     *
     * @param action {@link QuickActionItem}
     */
    public void addActionItem(QuickActionItem action) {
        actionList.add(action);
    }

    /**
     * Show popup window
     */
    public void show() {
        preShow();

        int[] location = new int[2];

        anchor.getLocationOnScreen(location);

        Rect anchorRect = new Rect(location[0], location[1], location[0] + anchor.getWidth(), location[1]
                + anchor.getHeight());

        root.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        root.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

        int rootWidth = root.getMeasuredWidth();
        int rootHeight = root.getMeasuredHeight();

        int screenWidth = windowManager.getDefaultDisplay().getWidth();
        //int screenHeight 	= windowManager.getDefaultDisplay().getHeight();

        int xPos = (screenWidth - rootWidth) / 2;
        int yPos = anchorRect.top - rootHeight;

        boolean onTop = true;

        // display on bottom
        if (rootHeight > anchorRect.top) {
            yPos = anchorRect.bottom;
            onTop = false;
        }

        showArrow(((onTop) ? R.id.arrow_down : R.id.arrow_up), anchorRect.centerX());

        setAnimationStyle(screenWidth, anchorRect.centerX(), onTop);

        createActionList();

        window.showAtLocation(this.anchor, Gravity.NO_GRAVITY, xPos, yPos);

        if (animateTrack) mTrack.startAnimation(mTrackAnim);
    }

    /**
     * Set animation style
     *
     * @param screenWidth Screen width
     * @param requestedX  distance from left screen
     * @param onTop       flag to indicate where the popup should be displayed. Set TRUE if displayed on top of anchor and vice versa
     */
    private void setAnimationStyle(int screenWidth, int requestedX, boolean onTop) {
        int arrowPos = requestedX - mArrowUp.getMeasuredWidth() / 2;

        switch (animStyle) {
            case ANIM_GROW_FROM_LEFT:
                window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left : R.style.Animations_PopDownMenu_Left);
                break;

            case ANIM_GROW_FROM_RIGHT:
                window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Right : R.style.Animations_PopDownMenu_Right);
                break;

            case ANIM_GROW_FROM_CENTER:
                window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Center : R.style.Animations_PopDownMenu_Center);
                break;

            case ANIM_AUTO:
                if (arrowPos <= screenWidth / 4) {
                    window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left : R.style.Animations_PopDownMenu_Left);
                } else if (arrowPos > screenWidth / 4 && arrowPos < 3 * (screenWidth / 4)) {
                    window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Center : R.style.Animations_PopDownMenu_Center);
                } else {
                    window.setAnimationStyle((onTop) ? R.style.Animations_PopDownMenu_Right : R.style.Animations_PopDownMenu_Right);
                }

                break;
        }
    }

    /**
     * Create action list
     */
    private void createActionList() {
        View view;
        String title;
        Drawable icon;
        OnClickListener listener;
        int index = 1;

        for (int i = 0; i < actionList.size(); i++) {
            title = actionList.get(i).getTitle();
            icon = actionList.get(i).getIcon();
            listener = actionList.get(i).getListener();

            view = getActionItem(title, icon, listener);

            view.setFocusable(true);
            view.setClickable(true);

            mTrack.addView(view, index);

            index++;
        }
    }

    /**
     * Get action item {@link View}
     *
     * @param title    action item title
     * @param icon     {@link Drawable} action item icon
     * @param listener {@link View.OnClickListener} action item listener
     * @return action item {@link View}
     */
    private View getActionItem(String title, Drawable icon, OnClickListener listener) {
        LinearLayout container = (LinearLayout) inflater.inflate(R.layout.action_item, null);
        ImageView img = (ImageView) container.findViewById(R.id.icon);
        TextView text = (TextView) container.findViewById(R.id.title);

        if (icon != null) {
            img.setImageDrawable(icon);
        } else {
            img.setVisibility(View.GONE);
        }

        if (title != null) {
            text.setText(title);
        } else {
            text.setVisibility(View.GONE);
        }

        if (listener != null) {
            container.setOnClickListener(listener);
        }

        return container;
    }

    /**
     * Show arrow
     *
     * @param whichArrow arrow type resource id
     * @param requestedX distance from left screen
     */
    private void showArrow(int whichArrow, int requestedX) {
        final View showArrow = (whichArrow == R.id.arrow_up) ? mArrowUp : mArrowDown;
        final View hideArrow = (whichArrow == R.id.arrow_up) ? mArrowDown : mArrowUp;

        final int arrowWidth = mArrowUp.getMeasuredWidth();

        showArrow.setVisibility(View.VISIBLE);

        ViewGroup.MarginLayoutParams param = (ViewGroup.MarginLayoutParams) showArrow.getLayoutParams();

        param.leftMargin = requestedX - arrowWidth / 2;

        hideArrow.setVisibility(View.INVISIBLE);
    }
}
